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From a191c6d6e5180f54ecf16adda61988a16ce9fe48 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Tue, 7 Jul 2020 11:23:48 +0100
Subject: [PATCH] media: i2c: imx290: Add support for g_selection to
report cropping
Userspace needs to know the cropping arrangements for each mode,
so expose this through g_selection.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
drivers/media/i2c/imx290.c | 84 ++++++++++++++++++++++++++++++++++++++
1 file changed, 84 insertions(+)
--- a/drivers/media/i2c/imx290.c
+++ b/drivers/media/i2c/imx290.c
@@ -61,6 +61,13 @@ enum imx290_clk_index {
#define IMX290_PGCTRL_THRU BIT(1)
#define IMX290_PGCTRL_MODE(n) ((n) << 4)
+#define IMX290_NATIVE_WIDTH 1945U
+#define IMX290_NATIVE_HEIGHT 1109U
+#define IMX290_PIXEL_ARRAY_LEFT 4U
+#define IMX290_PIXEL_ARRAY_TOP 12U
+#define IMX290_PIXEL_ARRAY_WIDTH 1937U
+#define IMX290_PIXEL_ARRAY_HEIGHT 1097U
+
static const char * const imx290_supply_name[] = {
"vdda",
"vddd",
@@ -80,6 +87,7 @@ struct imx290_mode {
u32 hmax;
u32 vmax;
u8 link_freq_index;
+ struct v4l2_rect crop;
const struct imx290_regval *data;
u32 data_size;
@@ -384,6 +392,12 @@ static const struct imx290_mode imx290_m
.hmax = 0x1130,
.vmax = 0x0465,
.link_freq_index = FREQ_INDEX_1080P,
+ .crop = {
+ .left = 4 + 8,
+ .top = 12 + 8,
+ .width = 1920,
+ .height = 1080,
+ },
.data = imx290_1080p_settings,
.data_size = ARRAY_SIZE(imx290_1080p_settings),
.clk_data = {
@@ -398,6 +412,12 @@ static const struct imx290_mode imx290_m
.hmax = 0x19c8,
.vmax = 0x02ee,
.link_freq_index = FREQ_INDEX_720P,
+ .crop = {
+ .left = 4 + 8 + 320,
+ .top = 12 + 8 + 180,
+ .width = 1280,
+ .height = 720,
+ },
.data = imx290_720p_settings,
.data_size = ARRAY_SIZE(imx290_720p_settings),
.clk_data = {
@@ -415,6 +435,12 @@ static const struct imx290_mode imx290_m
.hmax = 0x0898,
.vmax = 0x0465,
.link_freq_index = FREQ_INDEX_1080P,
+ .crop = {
+ .left = 4 + 8,
+ .top = 12 + 8,
+ .width = 1920,
+ .height = 1080,
+ },
.data = imx290_1080p_settings,
.data_size = ARRAY_SIZE(imx290_1080p_settings),
.clk_data = {
@@ -429,6 +455,12 @@ static const struct imx290_mode imx290_m
.hmax = 0x0ce4,
.vmax = 0x02ee,
.link_freq_index = FREQ_INDEX_720P,
+ .crop = {
+ .left = 4 + 8 + 320,
+ .top = 12 + 8 + 180,
+ .width = 1280,
+ .height = 720,
+ },
.data = imx290_720p_settings,
.data_size = ARRAY_SIZE(imx290_720p_settings),
.clk_data = {
@@ -875,6 +907,57 @@ static int imx290_write_current_format(s
return 0;
}
+static const struct v4l2_rect *
+__imx290_get_pad_crop(struct imx290 *imx290, struct v4l2_subdev_pad_config *cfg,
+ unsigned int pad, enum v4l2_subdev_format_whence which)
+{
+ switch (which) {
+ case V4L2_SUBDEV_FORMAT_TRY:
+ return v4l2_subdev_get_try_crop(&imx290->sd, cfg, pad);
+ case V4L2_SUBDEV_FORMAT_ACTIVE:
+ return &imx290->current_mode->crop;
+ }
+
+ return NULL;
+}
+
+static int imx290_get_selection(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_selection *sel)
+{
+ switch (sel->target) {
+ case V4L2_SEL_TGT_CROP: {
+ struct imx290 *imx290 = to_imx290(sd);
+
+ mutex_lock(&imx290->lock);
+ sel->r = *__imx290_get_pad_crop(imx290, cfg, sel->pad,
+ sel->which);
+ mutex_unlock(&imx290->lock);
+
+ return 0;
+ }
+
+ case V4L2_SEL_TGT_NATIVE_SIZE:
+ sel->r.top = 0;
+ sel->r.left = 0;
+ sel->r.width = IMX290_NATIVE_WIDTH;
+ sel->r.height = IMX290_NATIVE_HEIGHT;
+
+ return 0;
+
+ case V4L2_SEL_TGT_CROP_DEFAULT:
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ sel->r.top = IMX290_PIXEL_ARRAY_TOP;
+ sel->r.left = IMX290_PIXEL_ARRAY_LEFT;
+ sel->r.width = IMX290_PIXEL_ARRAY_WIDTH;
+ sel->r.height = IMX290_PIXEL_ARRAY_HEIGHT;
+
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
/* Start streaming */
static int imx290_start_streaming(struct imx290 *imx290)
{
@@ -1073,6 +1156,7 @@ static const struct v4l2_subdev_pad_ops
.enum_frame_size = imx290_enum_frame_size,
.get_fmt = imx290_get_fmt,
.set_fmt = imx290_set_fmt,
+ .get_selection = imx290_get_selection,
};
static const struct v4l2_subdev_ops imx290_subdev_ops = {
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